.page-faq {
  --faq-hair: rgba(42, 51, 96, .78);
  --faq-hair-soft: rgba(42, 51, 96, .45);
  --faq-glow: rgba(107, 76, 230, .16);
  --faq-panel: rgba(17, 26, 61, .55);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(22px, 3.6vw, 44px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(38%, 320px);
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--ice) 60%, transparent);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4.6vw, 58px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--moon);
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  margin: 18px 0 0;
  color: var(--stardust);
  font-size: 16.5px;
  line-height: 1.85;
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: clamp(26px, 4vw, 52px);
  margin-bottom: clamp(48px, 7vw, 96px);
  min-width: 0;
}

.page-faq .faq-body {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 206px minmax(0, 1fr);
    gap: 60px;
  }
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__caption {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--stardust);
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .index-link {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--stardust);
  text-decoration: none;
  white-space: nowrap;
  padding: 9px 12px;
  border: 1px solid var(--faq-hair-soft);
  border-left: 2px solid var(--faq-hair);
  border-radius: var(--radius);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .index-link:hover {
  color: var(--ice);
  border-color: var(--violet);
}

.page-faq .index-link.is-current {
  color: var(--moon);
  border-color: var(--violet);
  border-left-color: var(--ice);
  background-color: var(--violet-soft);
}

@media (min-width: 1024px) {
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 32px);
    align-self: start;
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
  }

  .page-faq .faq-rail__list li + li {
    margin-top: 2px;
  }

  .page-faq .index-link {
    white-space: normal;
    line-height: 1.5;
  }
}

/* ---------- 章节基础 ---------- */
.page-faq .faq-block + .faq-block {
  margin-top: 0;
}

.page-faq .faq-block {
  min-width: 0;
}

.page-faq .faq-block .sec-lede {
  max-width: 62ch;
  color: var(--stardust);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .orbit-divider {
  margin: clamp(38px, 5.5vw, 68px) 0;
}

/* ---------- 01 三条高频结论 ---------- */
.page-faq .faq-quick {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-quick__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 0 20px 20px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-quick__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: var(--violet);
  opacity: .35;
  transition: opacity .24s var(--ease);
}

.page-faq .faq-quick__item:hover::before {
  opacity: 1;
}

.page-faq .faq-quick__item:nth-child(2)::before {
  background: var(--magenta);
}

.page-faq .faq-quick__item:nth-child(3)::before {
  background: var(--teal);
}

.page-faq .faq-quick__idx {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--ice);
}

.page-faq .faq-quick__item:nth-child(2) .faq-quick__idx {
  color: var(--magenta);
}

.page-faq .faq-quick__item:nth-child(3) .faq-quick__idx {
  color: var(--teal);
}

.page-faq .faq-quick__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.5;
  color: var(--moon);
  margin: 4px 0 8px;
}

.page-faq .faq-quick__text {
  margin: 0;
  color: var(--stardust);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 58ch;
}

@media (min-width: 720px) {
  .page-faq .faq-quick__item {
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding-block: 24px;
  }

  .page-faq .faq-quick__idx {
    padding-top: 6px;
  }

  .page-faq .faq-quick__title {
    margin-top: 0;
  }
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  margin: 32px 0 0;
  padding: 0;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(17, 26, 61, .9), rgba(107, 76, 230, .14));
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  display: block;
  margin: 0;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--stardust);
  border-top: 1px solid var(--faq-hair-soft);
}

/* ---------- 02 问答手风琴 ---------- */
.page-faq .faq-group {
  margin-top: 30px;
}

.page-faq .faq-group__label {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ice);
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .acc {
  display: flex;
  flex-direction: column;
}

.page-faq .acc__item {
  position: relative;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .acc__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--violet), var(--ice));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .3s var(--ease);
}

.page-faq .acc__item[open]::before {
  transform: scaleY(1);
}

.page-faq .acc__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  padding: 18px 40px 18px 16px;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--moon);
  background: transparent;
  transition: background-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .acc__q::-webkit-details-marker {
  display: none;
}

.page-faq .acc__q:hover {
  background-color: rgba(107, 76, 230, .08);
  color: var(--ice);
}

.page-faq .acc__q:focus-visible {
  outline: 1px solid var(--ice);
  outline-offset: -2px;
}

.page-faq .acc__q::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--violet);
  transition: transform .24s var(--ease), color .24s var(--ease);
}

.page-faq .acc__item[open] .acc__q::after {
  transform: rotate(45deg);
  color: var(--ice);
}

.page-faq .acc__num {
  flex: none;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ice);
  padding-top: 3px;
}

.page-faq .acc__a {
  padding: 0 24px 22px 46px;
  color: var(--stardust);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .acc__a p {
  margin: 0 0 12px;
  max-width: 64ch;
}

@media (max-width: 559px) {
  .page-faq .acc__q {
    padding: 16px 34px 16px 12px;
    font-size: 15.5px;
    flex-direction: column;
    gap: 6px;
  }

  .page-faq .acc__a {
    padding: 0 14px 20px 12px;
  }
}

/* ---------- 复制按钮 ---------- */
.page-faq .copy-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ice);
  background: transparent;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .copy-btn:hover {
  border-color: var(--violet);
  color: var(--moon);
  background-color: rgba(107, 76, 230, .12);
}

.page-faq .copy-btn:focus-visible {
  outline: 1px solid var(--ice);
  outline-offset: 2px;
}

.page-faq .copy-status {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--teal);
  margin-left: 10px;
}

/* ---------- 03 每周三同步 ---------- */
.page-faq .faq-block--sync {
  position: relative;
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 92% 4%, var(--faq-glow), transparent 58%),
    linear-gradient(160deg, rgba(17, 26, 61, .92), rgba(7, 11, 31, .7));
  overflow: hidden;
}

.page-faq .faq-block--sync::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 96px;
  background: linear-gradient(180deg, var(--magenta), transparent);
}

.page-faq .faq-sync {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .faq-sync__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-sync__item:last-child {
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-sync__when {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--stardust);
}

.page-faq .faq-sync__item:nth-child(2) .faq-sync__when {
  color: var(--magenta);
}

.page-faq .faq-sync__item:nth-child(3) .faq-sync__when {
  color: var(--ice);
}

.page-faq .faq-sync__text {
  margin: 0;
  color: var(--stardust);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 62ch;
}

@media (min-width: 720px) {
  .page-faq .faq-sync__item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }
}

.page-faq .faq-figure--sync {
  margin-top: 28px;
}

/* ---------- 04 收藏与常用页面 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-steps__item:first-child {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-steps__num {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--violet);
}

.page-faq .faq-steps__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16.5px, 1.9vw, 20px);
  line-height: 1.55;
  color: var(--moon);
  margin: 0 0 8px;
}

.page-faq .faq-steps__body p {
  margin: 0;
  color: var(--stardust);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 62ch;
}

@media (min-width: 720px) {
  .page-faq .faq-steps__item {
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding-block: 24px;
  }

  .page-faq .faq-steps__num {
    padding-top: 6px;
  }
}

.page-faq .faq-body a:not(.index-link):not(.btn) {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 216, 255, .38);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-body a:not(.index-link):not(.btn):hover {
  color: var(--moon);
  border-bottom-color: var(--violet);
}

.page-faq .faq-copy-panel {
  margin-top: 30px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px dashed var(--faq-hair);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(63, 208, 201, .07), rgba(17, 26, 61, .5));
}

.page-faq .faq-copy-panel__label {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--teal);
  margin: 0 0 12px;
}

.page-faq .copy-field {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .copy-field__text {
  flex: 1 1 260px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--moon);
}

/* ---------- 05 联系人工 ---------- */
.page-faq .faq-block--reach {
  position: relative;
  padding-top: clamp(4px, 1vw, 12px);
}

.page-faq .faq-reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-faq .faq-reach {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
}

.page-faq .faq-reach__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-reach__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-reach__key {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ice);
}

.page-faq .faq-reach__val {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--moon);
  word-break: break-word;
}

@media (min-width: 560px) {
  .page-faq .faq-reach__item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-faq .faq-reach__tips {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--faq-hair);
  border-left: 3px solid var(--violet);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(17, 26, 61, .8), rgba(226, 74, 141, .08));
}

.page-faq .faq-reach__tips-title {
  margin: 0 0 14px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--magenta);
}

.page-faq .faq-reach__tips-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-faq .faq-reach__tips-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  color: var(--stardust);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .faq-reach__tips-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--ice);
}

.page-faq .faq-reach__note {
  margin: 0 0 20px;
  color: var(--stardust);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq-reach__btn {
  display: inline-block;
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__item::before,
  .page-faq .acc__item::before,
  .page-faq .acc__q::after,
  .page-faq .index-link,
  .page-faq .copy-btn,
  .page-faq .acc__q {
    transition: none;
  }
}
</main>